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From "Sunil G (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-7780) Documentation for Placement Constraints
Date Sat, 27 Jan 2018 05:21:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-7780?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16341971#comment-16341971

Sunil G commented on YARN-7780:

Thanks [~kkaranasos]

Few comments:
 # In distributed shell section, usage of {{-_num_containers_}} may confuse users when PlacementSpec
is also used together. So could you please add a note that how this relation works to avoid
 # Also in {{example of PlacementSpec}} section, please add a cardinality example as well.
 # I think *TargetTag* is one of critical piece in a PlacementSpec, so I would like to give
a bit more emphasis on that. Something like {{ place 5 containers with tag "hbase" with
affinity to a rack on which containers with tag "zk" are running (i.e., an "hbase" container
should not be placed at a rack where an "zk" container is running as TargetTag for "hbase"
constraint is specified as "zk")}}
 # Do we need to explicitly mention that we are using *SchedulingRequest* instead of *ResourceRequest*


> Documentation for Placement Constraints
> ---------------------------------------
>                 Key: YARN-7780
>                 URL: https://issues.apache.org/jira/browse/YARN-7780
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Arun Suresh
>            Assignee: Konstantinos Karanasos
>            Priority: Major
>         Attachments: YARN-7780-YARN-6592.001.patch, YARN-7780-YARN-6592.002.patch
> JIRA to track documentation for the feature.

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